20th Ave. & Harlan St.

Edgewater, CO

  • Diagram of a roundabout intersection labeling roads as Harlan St and 20th Ave, with a central green island and crosswalks. A new retaining wall is indicated on one side.

    BACKGROUND

    To address multimodal safety, mobility, and vehicular performance, the city of Edgewater retained MTJ to evaluate the feasibility of a compact-style roundabout at this commercial, highly constrained intersection.

  • SUMMARY

    Alternative concepts addressed these key issues:

    -Minimize/avoid undesirable ROW impacts to surrounding properties

    -Ensure compatibility with existing and/or proposed roadway cross sections to include ped and bike design features – cycle track and on-street bike facilities

    Accommodate necessary design vehicles:

    -Large trucks/freight

    -Transit and school buses

    -Emergency response/fire trucks

    Two alternatives were developed to evaluate optimal size/shape and fit with acceptable impacts. The optimal design was a non-circular 107’ x 95’ ICD compact-style roundabout. The compact-style design allows the central island to retain landscape features that will promote visual conspicuity for this application.

Highlights

  • Minimized undesirable ROW impacts to surrounding properties

  • Compatible with existing roadway cross sections, providing optimal pedestrian/ bicycle accommodations

  • Accommodated large trucks, transit/school buses, emergency response vehicles

  • Non-circular compact-style roundabout

Satellite